I try not to eat too many burgers from fast food chains these days (mom and pop joints is a different story), but I did try one. I could just tell the difference, and might not have noticed if I didn't know beforehand. But it did have a slight aftertaste. I'm not a whopper fan to begin with, but I would so slightly prefer a real one to the impossible version. Burger King has a tasty spicy chicken sandwich though. Just don't eat two of them back to back. Not if you want to hold your loaf anyway. Also, I noticed that the impossible whopper didn't seem nutritionally satisfying. And I'm not a vegetarian/vegan knocker. I wouldn't mind going that way if I had more time to find out about how to do so. At least partially any way (eating meat from small farms and hunts, locally caught fish). I don't like factory farming. I'm just too lazy and ignorant on the topic to do anything about it, I guess.